VERITAS Volume Manager 3.1 Storage Administrator Administrator's Guide

Volume Tasks
Adding a Log to a Volume
Chapter 4172
resynchronization time for RAID-5 volumes after a system failure. A
RAID-5 log maintains a copy of the data and parity being written to the
volume at any given time. If a system failure occurs, the Volume
Manager can “replay” the RAID-5 log to resynchronize the volume. This
copies the data and parity that was being written at the time of failure
from the log to the appropriate areas of the RAID-5 volume.
You can create multiple RAID-5 logs (on different disks) to mirror the log
information. Ideally, each RAID-5 volume should have at least two logs.
Step 1. Select the RAID-5 volume to contain the log.
Step 2. Choose Volumes > Log > Add (Selected menu) or Volume Add Log
(Command Launcher).
Step 3. Complete the Add Log dialog box as follows:
When you have provided all necessary information in the dialog box,
click OK.
Volume Name: If the correct volume name is not already displayed in
this field, type the volume’s name or click Browse to
select the volume.
Options To place the log on a specific disk, type the name of the
disk in the Disk Name field or click Browse to select a
disk.
Notes:
• This task requires a volume name.